In 1968, thousands of Chicano high students walked out of classes in Los Angeles to protest inequity and injustice as part of a civil rights movement that would result in profound change. (Photo: Raul Ruiz)

After President Donald Trump’s 2018 State of the Union address, I appeared on public radio with Jonathan Blitzer of the New Yorker magazine to talk about the MS-13 street gang. The history of the gang is far more complex than the picture painted by the president.